Technique Updated 2026-04

AI Agent

Definition

An AI agent is an autonomous system that uses an LLM to plan, decide and execute real tasks without human intervention at each step.

See also in the glossary

L
LLM (Large Language Model)
An LLM is an AI model trained on billions of texts, capable of understanding and generating human language.
P
Prompt
A prompt is the instruction or question you give an AI to get a response. It's the interface between you and the model.
R
RAG (Retrieval-Augmented Generation)
RAG is a technique that connects an LLM to external data sources to generate more accurate and up-to-date answers.
G
Generative AI
Generative AI refers to artificial intelligence systems capable of creating original content: text, images, video, audio, code.

Tools that use ai agent

O
OpenClaw
The open source AI agent that turns your LLMs into autonomous workers
4.5/5
C
Claude Code
The autonomous AI dev agent, right in your terminal
4.6/5
R
Relevance AI
No-code platform for building enterprise AI agents
4.3/5
A
Activepieces
Build AI agents and automations with no code
4.8/5

Frequently Asked Questions

What's the difference between a chatbot and an AI agent?
A chatbot answers questions in a conversation. An AI agent acts: it navigates files, executes commands, calls APIs, makes decisions and chains actions to complete an entire mission.
Are AI agents reliable?
It depends on the task. For well-defined tasks (send an email, create a file, run a search), agents are very reliable. For ambiguous or critical tasks, human oversight is still necessary.
What are the best AI agents in 2026?
OpenClaw (open source, 100K+ stars), Claude Code (development), Relevance AI (business no-code) and Activepieces (open source automation) are the most used.